Time code signal transmitting method and time code signal transmitting apparatus

a time code signal and transmission method technology, applied in the field of time code signal transmission method and time code signal transmission apparatus, can solve the problems of deterioration in the precision of time code signal, error (change in data content) generation, and method or structure for detecting an error generated in time code signal not being carried out at all, so as to achieve high precision
US7151806B2Active Publication Date: 2006-12-19PANASONIC CORP
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Patents(United States)
Current Assignee / Owner
PANASONIC CORP
Publication Date
2006-12-19

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Abstract

The present invention comprises the step of reading a check-receiving data included in a transmitted time code signal and using the read check-receiving data to generate a transmitting side checking data, and the step of attaching the transmitting side checking data to the transmitted time code signal, as a pre-processing step at the time of transmitting the time code signal. The present invention comprises the step of reading the check-receiving data from the received time code signal and using the read check-receiving data to generate a receiving side checking data, and the step of reading the transmitting side checking data from the received time code signal and comparing the read transmitting side checking data to the receiving side checking data, thereby verifying whether or not an error is generated in the received time code signal. In this way, an error can be detected in the time code signal, as a post-processing step after the time code signal is received.
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Description

TECHNICAL FIELD

[0001] The present invention relates to a method and a device for transmitting a time code signal generated to be attached to a picture signal.BACKGROUND ART

[0002] As a time code signal used in the transmission of a picture signal, there is an LTC (linear time code) signal, which is recorded on a voice frequency band after being subjected to bi-phase mark modulation. Time code signals are transmitted in synchronization with picture signals.

[0003] In a time code signal, an error (change in data content) may be generated by a reading failure or transmission failure when the time code signal is regenerated from a regenerating device or the signal is transmitted. Such an error causes a deterioration in the precision of the time code signal. For this reason, it is necessary to detect the generation of the error in the time code signal with high accuracy. When the error can be detected, the use of the time code signal can be stopped. The location of the error can also be resto...

Claims

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